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Diffstat (limited to 'ldb/ldb_tdb/ldb_search.c')
-rw-r--r--ldb/ldb_tdb/ldb_search.c551
1 files changed, 0 insertions, 551 deletions
diff --git a/ldb/ldb_tdb/ldb_search.c b/ldb/ldb_tdb/ldb_search.c
deleted file mode 100644
index 35149c4b..00000000
--- a/ldb/ldb_tdb/ldb_search.c
+++ /dev/null
@@ -1,551 +0,0 @@
-/*
- ldb database library
-
- Copyright (C) Andrew Tridgell 2004
-
- ** NOTE! The following LGPL license applies to the ldb
- ** library. This does NOT imply that all of Samba is released
- ** under the LGPL
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 3 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, see <http://www.gnu.org/licenses/>.
-*/
-
-/*
- * Name: ldb
- *
- * Component: ldb search functions
- *
- * Description: functions to search ldb+tdb databases
- *
- * Author: Andrew Tridgell
- */
-
-#include "ldb_includes.h"
-
-#include "ldb_tdb.h"
-
-/*
- add one element to a message
-*/
-static int msg_add_element(struct ldb_message *ret,
- const struct ldb_message_element *el,
- int check_duplicates)
-{
- unsigned int i;
- struct ldb_message_element *e2, *elnew;
-
- if (check_duplicates && ldb_msg_find_element(ret, el->name)) {
- /* its already there */
- return 0;
- }
-
- e2 = talloc_realloc(ret, ret->elements, struct ldb_message_element, ret->num_elements+1);
- if (!e2) {
- return -1;
- }
- ret->elements = e2;
-
- elnew = &e2[ret->num_elements];
-
- elnew->name = talloc_strdup(ret->elements, el->name);
- if (!elnew->name) {
- return -1;
- }
-
- if (el->num_values) {
- elnew->values = talloc_array(ret->elements, struct ldb_val, el->num_values);
- if (!elnew->values) {
- return -1;
- }
- } else {
- elnew->values = NULL;
- }
-
- for (i=0;i<el->num_values;i++) {
- elnew->values[i] = ldb_val_dup(elnew->values, &el->values[i]);
- if (elnew->values[i].length != el->values[i].length) {
- return -1;
- }
- }
-
- elnew->num_values = el->num_values;
-
- ret->num_elements++;
-
- return 0;
-}
-
-/*
- add the special distinguishedName element
-*/
-static int msg_add_distinguished_name(struct ldb_message *msg)
-{
- struct ldb_message_element el;
- struct ldb_val val;
- int ret;
-
- el.flags = 0;
- el.name = "distinguishedName";
- el.num_values = 1;
- el.values = &val;
- val.data = (uint8_t *)ldb_dn_alloc_linearized(msg, msg->dn);
- val.length = strlen((char *)val.data);
-
- ret = msg_add_element(msg, &el, 1);
- return ret;
-}
-
-/*
- add all elements from one message into another
- */
-static int msg_add_all_elements(struct ldb_module *module, struct ldb_message *ret,
- const struct ldb_message *msg)
-{
- struct ldb_context *ldb = module->ldb;
- unsigned int i;
- int check_duplicates = (ret->num_elements != 0);
-
- if (msg_add_distinguished_name(ret) != 0) {
- return -1;
- }
-
- for (i=0;i<msg->num_elements;i++) {
- const struct ldb_schema_attribute *a;
- a = ldb_schema_attribute_by_name(ldb, msg->elements[i].name);
- if (a->flags & LDB_ATTR_FLAG_HIDDEN) {
- continue;
- }
- if (msg_add_element(ret, &msg->elements[i],
- check_duplicates) != 0) {
- return -1;
- }
- }
-
- return 0;
-}
-
-
-/*
- pull the specified list of attributes from a message
- */
-static struct ldb_message *ltdb_pull_attrs(struct ldb_module *module,
- TALLOC_CTX *mem_ctx,
- const struct ldb_message *msg,
- const char * const *attrs)
-{
- struct ldb_message *ret;
- int i;
-
- ret = talloc(mem_ctx, struct ldb_message);
- if (!ret) {
- return NULL;
- }
-
- ret->dn = ldb_dn_copy(ret, msg->dn);
- if (!ret->dn) {
- talloc_free(ret);
- return NULL;
- }
-
- ret->num_elements = 0;
- ret->elements = NULL;
-
- if (!attrs) {
- if (msg_add_all_elements(module, ret, msg) != 0) {
- talloc_free(ret);
- return NULL;
- }
- return ret;
- }
-
- for (i=0;attrs[i];i++) {
- struct ldb_message_element *el;
-
- if (strcmp(attrs[i], "*") == 0) {
- if (msg_add_all_elements(module, ret, msg) != 0) {
- talloc_free(ret);
- return NULL;
- }
- continue;
- }
-
- if (ldb_attr_cmp(attrs[i], "distinguishedName") == 0) {
- if (msg_add_distinguished_name(ret) != 0) {
- return NULL;
- }
- continue;
- }
-
- el = ldb_msg_find_element(msg, attrs[i]);
- if (!el) {
- continue;
- }
- if (msg_add_element(ret, el, 1) != 0) {
- talloc_free(ret);
- return NULL;
- }
- }
-
- return ret;
-}
-
-/*
- search the database for a single simple dn.
- return LDB_ERR_NO_SUCH_OBJECT on record-not-found
- and LDB_SUCCESS on success
-*/
-static int ltdb_search_base(struct ldb_module *module, struct ldb_dn *dn)
-{
- struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data;
- TDB_DATA tdb_key, tdb_data;
-
- if (ldb_dn_is_null(dn)) {
- return LDB_ERR_NO_SUCH_OBJECT;
- }
-
- /* form the key */
- tdb_key = ltdb_key(module, dn);
- if (!tdb_key.dptr) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- tdb_data = tdb_fetch(ltdb->tdb, tdb_key);
- talloc_free(tdb_key.dptr);
- if (!tdb_data.dptr) {
- return LDB_ERR_NO_SUCH_OBJECT;
- }
-
- free(tdb_data.dptr);
- return LDB_SUCCESS;
-}
-
-/*
- search the database for a single simple dn, returning all attributes
- in a single message
-
- return LDB_ERR_NO_SUCH_OBJECT on record-not-found
- and LDB_SUCCESS on success
-*/
-int ltdb_search_dn1(struct ldb_module *module, struct ldb_dn *dn, struct ldb_message *msg)
-{
- struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data;
- int ret;
- TDB_DATA tdb_key, tdb_data;
-
- memset(msg, 0, sizeof(*msg));
-
- /* form the key */
- tdb_key = ltdb_key(module, dn);
- if (!tdb_key.dptr) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- tdb_data = tdb_fetch(ltdb->tdb, tdb_key);
- talloc_free(tdb_key.dptr);
- if (!tdb_data.dptr) {
- return LDB_ERR_NO_SUCH_OBJECT;
- }
-
- msg->num_elements = 0;
- msg->elements = NULL;
-
- ret = ltdb_unpack_data(module, &tdb_data, msg);
- free(tdb_data.dptr);
- if (ret == -1) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- if (!msg->dn) {
- msg->dn = ldb_dn_copy(msg, dn);
- }
- if (!msg->dn) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- return LDB_SUCCESS;
-}
-
-/*
- add a set of attributes from a record to a set of results
- return 0 on success, -1 on failure
-*/
-int ltdb_add_attr_results(struct ldb_module *module,
- TALLOC_CTX *mem_ctx,
- struct ldb_message *msg,
- const char * const attrs[],
- unsigned int *count,
- struct ldb_message ***res)
-{
- struct ldb_message *msg2;
- struct ldb_message **res2;
-
- /* pull the attributes that the user wants */
- msg2 = ltdb_pull_attrs(module, mem_ctx, msg, attrs);
- if (!msg2) {
- return -1;
- }
-
- /* add to the results list */
- res2 = talloc_realloc(mem_ctx, *res, struct ldb_message *, (*count)+2);
- if (!res2) {
- talloc_free(msg2);
- return -1;
- }
-
- (*res) = res2;
-
- (*res)[*count] = talloc_move(*res, &msg2);
- (*res)[(*count)+1] = NULL;
- (*count)++;
-
- return 0;
-}
-
-
-
-/*
- filter the specified list of attributes from a message
- removing not requested attrs.
- */
-int ltdb_filter_attrs(struct ldb_message *msg, const char * const *attrs)
-{
- int i, keep_all = 0;
-
- if (attrs) {
- /* check for special attrs */
- for (i = 0; attrs[i]; i++) {
- if (strcmp(attrs[i], "*") == 0) {
- keep_all = 1;
- break;
- }
-
- if (ldb_attr_cmp(attrs[i], "distinguishedName") == 0) {
- if (msg_add_distinguished_name(msg) != 0) {
- return -1;
- }
- }
- }
- } else {
- keep_all = 1;
- }
-
- if (keep_all) {
- if (msg_add_distinguished_name(msg) != 0) {
- return -1;
- }
- return 0;
- }
-
- for (i = 0; i < msg->num_elements; i++) {
- int j, found;
-
- for (j = 0, found = 0; attrs[j]; j++) {
- if (ldb_attr_cmp(msg->elements[i].name, attrs[j]) == 0) {
- found = 1;
- break;
- }
- }
-
- if (!found) {
- ldb_msg_remove_attr(msg, msg->elements[i].name);
- i--;
- }
- }
-
- return 0;
-}
-
-/*
- search function for a non-indexed search
- */
-static int search_func(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *state)
-{
- struct ltdb_context *ac;
- struct ldb_message *msg;
- int ret;
-
- ac = talloc_get_type(state, struct ltdb_context);
-
- if (key.dsize < 4 ||
- strncmp((char *)key.dptr, "DN=", 3) != 0) {
- return 0;
- }
-
- msg = ldb_msg_new(ac);
- if (!msg) {
- return -1;
- }
-
- /* unpack the record */
- ret = ltdb_unpack_data(ac->module, &data, msg);
- if (ret == -1) {
- talloc_free(msg);
- return -1;
- }
-
- if (!msg->dn) {
- msg->dn = ldb_dn_new(msg, ac->module->ldb,
- (char *)key.dptr + 3);
- if (msg->dn == NULL) {
- talloc_free(msg);
- return -1;
- }
- }
-
- /* see if it matches the given expression */
- if (!ldb_match_msg(ac->module->ldb, msg,
- ac->tree, ac->base, ac->scope)) {
- talloc_free(msg);
- return 0;
- }
-
- /* filter the attributes that the user wants */
- ret = ltdb_filter_attrs(msg, ac->attrs);
-
- if (ret == -1) {
- talloc_free(msg);
- return -1;
- }
-
- ret = ldb_module_send_entry(ac->req, msg, NULL);
- if (ret != LDB_SUCCESS) {
- ac->callback_failed = true;
- /* the callback failed, abort the operation */
- return -1;
- }
-
- return 0;
-}
-
-
-/*
- search the database with a LDAP-like expression.
- this is the "full search" non-indexed variant
-*/
-static int ltdb_search_full(struct ltdb_context *ctx)
-{
- struct ltdb_private *ltdb = talloc_get_type(ctx->module->private_data, struct ltdb_private);
- int ret;
-
- if (ltdb->in_transaction != 0) {
- ret = tdb_traverse(ltdb->tdb, search_func, ctx);
- } else {
- ret = tdb_traverse_read(ltdb->tdb, search_func, ctx);
- }
-
- if (ret == -1) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- return LDB_SUCCESS;
-}
-
-/*
- search the database with a LDAP-like expression.
- choses a search method
-*/
-int ltdb_search(struct ltdb_context *ctx)
-{
- struct ldb_module *module = ctx->module;
- struct ldb_request *req = ctx->req;
- struct ltdb_private *ltdb = talloc_get_type(module->private_data, struct ltdb_private);
- int ret;
-
- req->handle->state = LDB_ASYNC_PENDING;
-
- if (ltdb_lock_read(module) != 0) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- if (ltdb_cache_load(module) != 0) {
- ltdb_unlock_read(module);
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- if (req->op.search.tree == NULL) {
- ltdb_unlock_read(module);
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- if ((req->op.search.base == NULL) || (ldb_dn_is_null(req->op.search.base) == true)) {
-
- /* Check what we should do with a NULL dn */
- switch (req->op.search.scope) {
- case LDB_SCOPE_BASE:
- ldb_asprintf_errstring(module->ldb,
- "NULL Base DN invalid for a base search");
- ret = LDB_ERR_INVALID_DN_SYNTAX;
- break;
- case LDB_SCOPE_ONELEVEL:
- ldb_asprintf_errstring(module->ldb,
- "NULL Base DN invalid for a one-level search");
- ret = LDB_ERR_INVALID_DN_SYNTAX;
- break;
- case LDB_SCOPE_SUBTREE:
- default:
- /* We accept subtree searches from a NULL base DN, ie over the whole DB */
- ret = LDB_SUCCESS;
- }
- } else if (ldb_dn_is_valid(req->op.search.base) == false) {
-
- /* We don't want invalid base DNs here */
- ldb_asprintf_errstring(module->ldb,
- "Invalid Base DN: %s",
- ldb_dn_get_linearized(req->op.search.base));
- ret = LDB_ERR_INVALID_DN_SYNTAX;
-
- } else if (ltdb->check_base) {
- /* This database has been marked as 'checkBaseOnSearch', so do a spot check of the base dn */
- ret = ltdb_search_base(module, req->op.search.base);
-
- if (ret == LDB_ERR_NO_SUCH_OBJECT) {
- ldb_asprintf_errstring(module->ldb,
- "No such Base DN: %s",
- ldb_dn_get_linearized(req->op.search.base));
- }
-
- } else {
- /* If we are not checking the base DN life is easy */
- ret = LDB_SUCCESS;
- }
-
- ctx->tree = req->op.search.tree;
- ctx->scope = req->op.search.scope;
- ctx->base = req->op.search.base;
- ctx->attrs = req->op.search.attrs;
-
- if (ret == LDB_SUCCESS) {
- ret = ltdb_search_indexed(ctx);
- if (ret == LDB_ERR_NO_SUCH_OBJECT) {
- /* Not in the index, therefore OK! */
- ret = LDB_SUCCESS;
-
- }
- /* Check if we got just a normal error.
- * In that case proceed to a full search unless we got a
- * callback error */
- if ( ! ctx->callback_failed && ret != LDB_SUCCESS) {
- /* Not indexed, so we need to do a full scan */
- ret = ltdb_search_full(ctx);
- if (ret != LDB_SUCCESS) {
- ldb_set_errstring(module->ldb, "Indexed and full searches both failed!\n");
- }
- }
- }
-
- ltdb_unlock_read(module);
-
- return ret;
-}
-
generated by cgit (git 2.34.1) at 2024-11-08 11:37:02 +0000